Bricklayer&#39;s plumb rule



April 4, 1950 H. cRocKl-:R 2,503,098

y l BRICKLAYERS PLUMBV RULE Filed March 9, 1949 2 Sheets-Sheet 2 all lAITD R N EYE Patented pr. 4, '1950 BRICKLAYERS Pmism nous Harry Crocker,Inwood,

Application March 9, 11a-casual No. 80,436 A,1 claim. (c1. .r3-85a Thisinvention relates vto a device for use by brick` layers in erecting orrepairing structures, :and `more particularlyv .to a plumb rule 'forindiioating a; vertical direction. y .-iTIhe object. of .the inventionis to plumb rulewhich is adapted to be attached to a .board or'othersupport, for dependingly supporting a plumb .line whereby a wall to beconstructed can be aligned vertically 'as desired.

Another object of the invention is to provide if'plumbrule which willenable-'the user to accurately form the corners of brick walls and thelike, and which includes a calibrated arm for supporting the plumb linetherefrom, whereby the device can be adjusted as desired forconstructing walls of varying thicknesses.

Another object of the inventionis to provide a plumbing device which isextremely simple and inexpensive to manufacture. Other objects andadvantages will be apparent during the course of the followingdescription.

In the accompanying drawings forming a part of this application, and inwhich like numerals are used to designate like parts throughout thesame:

Figure 1 is a perspective view of the plumb rule in use, according tothe present invention;

Figure 2 is a top plan view of the plumb rule;

Figure 3 is an end elevational view of the plumb rule;

Figure 4 is a sectional View taken on the line 4--4 of Figure 3; l

Figure 5 is a bottom plan view of the calibrated arm;

Figure 6 is a top plan View of a modified plumb rule;

rovicl'e a Figure '7 is a sectional View taken on the line Figure 8 isan enlarged view of the slide bolt. Referring in detail to vthedrawings, the numeral 20 designates a bracket, Figures 1 through 5. Thebracket 20 may be made of any suitable material and comprises a pair offlat bars or legs 2l and 2l' which are arranged at right angles withrespect to each other and are.

Each of the barsZI and 2l 'threaded shank 23 and an enlarged base "28,

Figure 10. -"11hebase-28 fof the slide bolt 2'6 is lprovided. Withanlll-'shaped bore 2s through which passes the :upperfend ofasuitableplumb line'it. A suitable knot 3l may be tied in the iline '3l topreventv Vaccidental .movement :of :the .line fout .of the :bore 29.Arranged in threaded engagement with the shank .2.1 is .a wing 111111,32which serves to ,maintain the slide .bolt 215 immobile 'in zits a'dustedposition. "i

'Thevundersurface of fthe arm 2f. is provided with a calibrated scale orr-ule 33, Figure 5, and the base 28 of the slide bolt 26 is providedwith a suitable marking line 34, Figure 4, which is adapted to bealigned with the scale 33 so that the position of the plumb line 30 canbe set as desired as for construction of walls of varying thicknesses.The lower end of the plumb line 30 is adapted to be connected to a nail35, Figure 1, and the nail is driven into the corner ofthe l brick wallstructure 36 so that the brick layer will be able to readily align thebricks so that the corner of the structure will be accurately formed.

Referring to Figures 6 and 7, the plumb rule` has substantially the samestructure as the plumb rule of Figures 1 through 5, except that thebracket 31 has its legs 38 and 38 extending in opposite directionsfromthe legs of the bracket of the previously described device.Otherwise, the structure of the plumb rule is the same and the device ofFigures 6v and 7 is adapted to be used where it is advantageous ornecessary to have the legs 38 and 38 of the bracket 3l straddle aprojecting corner of a structure.

In use, the bracket of the plumb rule is secured to a wall or othersupport member of a structure. Thus, in Figures l through 5, the angularbracket 2,0 is adapted to be secured to a pair of boards or adjacentwalls of a structure, and the wing n-ut 32 is loosened so that the slidebolt 26'can be moved or adjusted along the arm 24 until the marking 34coincides with the desired marking on the scale 33, whereupon the wingnut is tightened. The plumb line 30 depends from the base of the slidebolt 26 and the lower end of the line 30 is adapted to be tied orsecured to a nail 35, Figure 1, which is driven into the wall structure35 at the juncture of the walls. Thus, with the plumb line so laid out,the brick layer will have no diculty in accurately placing subsequentbricks on the brick wall structure 3B and the plumb line 30 Will insurethat the corner is accurately aligned or formed. The bracket 3l ofFigures 6 and 7 is adapted to be used where there is a projecting cornerof a structure and again the ,ffo-FFICE# s is adapted to be readilyattached to the top of a sheeting board or other supporting structureand the measuring arm may be of any convenient length as desired. Theplumb rule of the present invention is easy to operate since `the slidebolt 26 can be positioned at the desired thickness of Walls to beconstructed, and the line 30? dropped and fastened to a securing elementwhereby the device can be used in the constructon of either a straightside, angle or corner.

While I have shown and described preferred ,embodiments of my invention,this is by way of rillustration only and I consider as my own al1 suchmodifications in construction as fairly fall within the scope of theappended claim.

I claim:

In a plumb rule, a bracket, said bracket comprising a pair of flat legsarranged at right angles with respect to each other and securedtogether, a horizontally disposed arm having one end arranged contiguousto the junction of said pair of legs and secured thereto, there being aslot extending longitudinally through said arm for the major portion ofits length, a calibrated scale arranged on the lower surface of saidarrn, a slide bolt including an exteriorly threaded shank slidablyarranged in said slot, said bolt further including a base of greaterdiameter than said shank arranged contiguous to the lower surface ofsaid arm, a securing member arranged in threaded engagement with saidshank for maintaining said vslide bolt immobile in its adjustedposition, a

marking arranged on said base for coacting with said calibrated scale,there being an L-shaped bore in said base, and a plumb line having itsupper end trained through said bore.

HARRY CROCKER.

REFERENCES CITED The following references are of record in the i'lle ofthis patent:

UNITED STATES PATENTS Number Name Date 1,824,321 B'aker ...g Sept. 22,1931 1,943,017 Harris Jan. 9, 1934 2,343,688 Maxey Mar. 7, 1944l2,468,167 Bucalo Apr. 26, 1949 2,469,583 Suverkrop May 10, 1949 FOREIGNPATENTS Number Country Date 619,474 Germany Oct. 1, 1935

